Announcement

1
Announcement

• Fiend trip
• Thursday 8 am on UT Campus
• Friday 8 am St. Edward's University

2
Lecture Objectives

• Introduce Low temperature Energy Systems
• Stirling engines

3
Low temperature energy systems

• Waist heat is part of almost every CHP
• Many new micro CHP system use Stirling engine

http//www.viessmann.com
4
Stirling cycle
Closed Cycle Engine No phase change Working
fluid air, hydrogen, or helium
5
Stirling engine
Theoretical efficiency of up to 25 (for 500ºC)
Real efficiency in residential application
between 6-8